Oulu to Buenos Aires: time difference
Buenos Aires is 6 h behind Oulu. Live clocks for both, the working hours they share, and how each one sits against your own time.
−6 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Oulu 05:25 5:25 AM Buenos Aires 23:25 11:25 PM You –:–
05:25 5:25 AM
Eastern European Summer Time · UTC+3
☀️ 07:55 · 🌙 18:17
23:25 11:25 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
−6 h
Buenos Aires is 6 h behind Oulu.
When you, Oulu and Buenos Aires are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇫🇮 Oulu
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇦🇷 Buenos Aires
18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇫🇮 Oulu | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 05:25 | 23:25 |
| Local date | Saturday, October 10, 2026 | Friday, October 9, 2026 |
| Time zone | Eastern European Summer Time | Argentina Standard Time |
| UTC offset | UTC+3 | UTC-3 |
| Offset from Oulu | — | −6 h |
| IANA zone | Europe/Helsinki | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+2, Oct 25, 03:00 | Not observed |
| Sunrise | 07:55 | 06:20 |
| Sunset | 18:17 | 19:03 |
| Daylight | 10 h 22 min | 12 h 43 min |
| People on this clock | 214,651 | 2,891,082 |
Compare Oulu with another city
More comparisons with Oulu: the time zones next to it and the far side of the clock.
Big time differences
Oulu and Buenos Aires: common questions
How many hours behind Oulu is Buenos Aires?
The clocks in Buenos Aires are 6 hours behind those in Oulu (UTC−3 and UTC+3).
If it is 9:00 AM in Oulu, what time is it in Buenos Aires?
At 9:00 AM in Oulu, clocks in Buenos Aires show 3:00 AM.
What time is it in Buenos Aires at the end of the working day in Oulu?
The working day in Oulu ends at 6:00 PM; in Buenos Aires it is 12:00 PM at that moment.
When is a good time to call Buenos Aires from Oulu?
Between 3:00 PM and 6:00 PM in Oulu – that is 9:00 AM to 12:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Buenos Aires compared with Oulu?
The new day starts in Buenos Aires later: until 6:00 AM in Oulu, it is still the previous day there. From 6:00 PM in Buenos Aires, Oulu is already on the next day.
Is the time difference between Oulu and Buenos Aires the same all year?
No. Only Oulu switches to summer time, so the gap changes twice a year. From October 25, 2026, Buenos Aires will be 5 hours behind Oulu.
